checking availability checking back checking compliance checking device checking email checking emails checking everyone checking everything checking facebook checking for leaks checking for updates checking her out checking him checking him out checking his watch checking ids checking in on me checking in on you checking in to make sure checking in to see checking in to see how checking in with you checking it checking it out checking it twice checking me checking me out checking means checking my email checking my messages checking my phone checking myself checking now checking off checking on him checking on it checking on me checking on you checking one checking online checking or savings checking other checking out checking out the competition checking out the new checking people checking procedure checking process checking quality checking references checking security checking social checking something checking system checking the area checking the box checking the level checking the mail checking the oil level checking the quality checking the status checking the time checking the weather checking them checking them out checking things checking this box checking this out checking to make checking to make sure checking to see checking to see how checking to see if i checking to see if you checking traffic checking up checking up on him checking up on me checking up on us checking up on you checking us checking us out checking what checking with me checking with you checking you checking you out checking your blood checking your credit checking your email checking your phone checking yourself checking-in checklist checklist can checklist has checklist of documents checklist of things checklist should